I always wondered that while I was in especially when I was an elder. I recognize that some people,elders included are brain-dead. But do you think that the average older today knows it's all nonsense? I know there are some elders that post here regularly and I'm sure they know that it's all BS but what about the others?
I think they do, but many don't feel like they are in the position of saying so or acting accordingly. Nothing worse that endorsing a product you know doesn't work. It's a horrible position to be in.
Additionally, and this is pretty much the case in all kinds of organizations, not just religious, there are other reasons for them to stay. Knowing that the WT is full of --it doesn't mean that it doesn't fulfill other needs that they or their families have.
Many people stay in cults and other organizations for a number of reasons, even if they don't agree or believe in everything they say or do. Those reasons have nothing to do with whether the organization lies or tells the truth.